Tall girls with short boy...

Most of the couples are in proportion of tall boy and relatively short girl. Is it instinct, cultural sort of thing, some scientific reason or something else. i couldn't figure it out. :?

I think taller girl with relatively shorter boy will be better specially in bed. As a romantic guy, I believe foreplay is essential part of sex. and fondling, kissing etc. are continued even during the intercourse. Recall your memory (lol) or imagine (if inexperienced) being a taller guy, will it be possible to bend yourself to kiss below the neck during action? to what extant can you bend your body? specially with the fact that girls are more flexible than boys. and if the girl is taller, i think everything will be easier. won't it be? its just a theory. whats your opinion?

one of my classmates who is a short boy around 168cm ,at most 170cm, but he told me he only dates tall girls.
why?
because it will be good for his future kid, somehow he believes if he could find a tall girl as his wife, then their kid will be a tall person, kid's height is related with mom's height.

btw his exgf is 175cm without high-heels
i used to tease him like this "hey, do u have to stand on stairs when u try to kiss her?" 8}